<h2>My Heroes</h2>
<div>
    <label>Hero name:
        <input type="text" #heroName />
    </label>
    <button (click)="add(heroName.value);heroName.value=''">add</button>
</div>
<ul class="heroes">
    <li *ngFor="let hero of heroes">
        <a routerLink="/detail/{{hero.id}}">
            <span class="badge">{{hero.id}}</span>{{hero.name}}
        </a>
        <button class="delete" (click)="delete(hero)">x</button>
    </li>
</ul>